# A145885 (b-file synthesized from sequence entry)
1 0
2 1
3 10
4 63
5 336
6 1650
7 7722
8 35035
9 155584
10 680238
11 2939300
12 12584726
13 53488800
14 225990180
15 950094810
16 3977737875
17 16594533120
18 69018792150
19 286296636780
20 1184823735810
21 4893253404000
22 20171905282620
23 83020426503300